Early 19th century; earliest use found in William Nicholson. From classical Latin reduct-, past participial stem of redūcerereduce + -ibility, probably after French réductibilité. Compare post-classical Latin reductibilis reducible.
Definition of reductibility in US English:
reductibility
nounrɪˌdʌktɪˈbɪlɪti
Reducibility.
Origin
Early 19th century; earliest use found in William Nicholson. From classical Latin reduct-, past participial stem of redūcere reduce + -ibility, probably after French réductibilité. Compare post-classical Latin reductibilis reducible.